Window-locking device.



W; COLE. WINDOW LOCKING DEVICE. APPLICATION IjILED MAB. 5,'19 10.

v 963,994.. Patented Ju1y12 ,1910.

FFICE.

WILLIAM COLE, OF TULLAI-IOMA, TENNESSEE, ASSIGNOR OF ONE-HALF TOBENJAMIN I-I. WILKINS, OF TULLAHOMA, TENNESSEE.

WINDOW-LOCKING DEVICE.

Specification of Letters Patent.

Patented July 12, 1910.

Application filed March 5, 1910. Serial No. 547,462.

T 0 all whom "it may concern:

Be it known that I, WVILLIAM COLE, a citizen of the United States,residing at Tullahoma, in the county of Cofiee and State of Tennessee,have invented a new and useful WVindow-Locking Device, of which thefollowing is a specification.

It is the object of this invention to provide a window locking device,whereby the upper and lower sashes of a window may be locked together inclosed position, locked together in partially opened positions; andwhereby either the upper sash or the lower sash may be locked in apartially open position.

Another object of the invention is to provide a novel'means foractuating the locking device and for retaining the same in inoperativeposition.

The drawings show but one form of the invention, and it is to beunderstood that changes, properly falling within the scope of what isclaimed, may be made, without departing from the spirit of theinvention.

Similar numerals of reference are employed to denote corresponding partsthroughout the several figures of the drawm s.

In the accompanying drawings, *igure 1 is a front elevation of a windowframe andv sashes, the same being equipped with the device of myinvention, the sashes being shown locked in their closed positions; Fig.2 is a fragmental transverse section, taken in the plane of the top ofthe lower sash; and Fig. 3 is a fragmental side elevation upon anenlarged scale.

In the drawings, the frame of the window is denoted generally by thenumeral 1. In this frame 1 reciprocate, in the usual, or in anyapproved, manner, the upper sash 2 and the lower sash 3. Secured to theframe 1 is a strip 4, a strip 5 being secured to one of the stiles ofthe upper sash 2. These members at and 5 are notched as denoted by thenumeral 6. Upon one of the stiles of the lower sash 3, adjacent theupper cross rail of said sash, are located alined bearings 7. In thesebearings 7 and in another bearing 8 which is located upon the stile ofthe lower sash adjacent the lower cross rail thereof, is a rock shaft 9.This rock shaft 9, at its lower end, is provided with a hand-hold 10,whereby the rock shaft may be rotated in the several bearings in whichit is mounted, and reciprocated longitudinally therein.

The rock shaft 9 is provided with a head 19, located between thebearings 7, the said bearings, contacting with the head 19, serving asstops to limlt the longitudinal reciprocation of the rock shaft 9. Atthe upper end of the rock shaft 9, there is a head 11, which overhangsthe upper edge of the lower sash 3. This head 11 is preferably formed bybending the upper end of the rock shaft 9, and the head 11 itself, isbent as denoted by the numeral 12, to define an opening 1 1. In theupper cross rail of the lower sash 8, there is an upstanding pin 15, anda coiled spring 16 surrounds the rock shaft 9 below the bearings 7. Oneend 17 of the spring 16 is secured to the lower sash 8, while the otherend 18 of the spring 16 is secured to the rock shaft 9.

In Fig. 1 of the drawings, the sashes 2 and 3 are shown in their closedpositions, the head 11 of the rock shaft 9 being engaged beneath thestrips 4 and 5, thus securing both the upper sash 2 and the lower sash3, intheir closed positions, and against movement. By seizing thehand-hold 10, the rock shaft 9 may be rotated, moving the head 11 frombeneath the strips. When this is done, the lower sash 3 may be raised,and the head 11 made to engage another pair of the notches, forinstance, the pair of notches to which the numeral 20 is immediatelyapplied. Thus, the lower sash may be locked in a partially openposition. In like manner, the upper sash 2 may be slipped downwardlyuntil one of the notches 6 in the strip 5 is disposed opposite to one ofthe notches 6 in the strip 4, and when the head 11 is brought to engagethese alined notches, the upper sash 2 will be locked in a partiallyopen position. Likewise, the upper sash2may he slid clownwardly, and thelower sash 3 may be slid upwardly, to aline the notches (S in the strips4 and 5, and when the head 11 is brought into engagement with thesealined notches, the sashes 2 and 3 will be locked in the positions towhich they have been slid.

The construction of the springs 16, and the manner of assembling thesaid spring with the rock shaft 9 are such that the spring, actingtorsionally, tends normally to rotate the rock shaft 9, to cause thehead 11 thereof to move into the notches 6 in the strips 1 and 5.Sometimes, particularly in windows which are manipulated by means ofsash weights, it may be desired to lock the rock shaft 9 in such aposition that the sashes 2 and 3 may be manipulated freely, withoutcausing the head 11 of the rock shaft to register in the notches 6. Insuch cases, the rock shaft is rotated, so that the opening 14 in thehead 11 will, as shown in solid line in Fig. 2, be engaged by the pin15. In order to cause the head 11 thus to engage the pin 15, the rockshaft is first rotated, and then slid upwardly, so that the opening 14:will be disposed above the pin 15. Then this is done, the spring 16 isnot only under torsional strain, but at the same time is compressed, andwhen the rock shaft is released, the spring 16, acting expansively uponthe rock shaft 9, will tend to force the. head 11 of the rock shaftdownwardly, so that the pin 15 will register in the opening 1 1. Thus,the spring 16 serves at once as a means for actuating the head 11 toengage in the notches 6, and likewise as a means for holding the head 11down in engagement with the pin 15; and when the head 11 is thus inengagement with the pin 15, the sashes may be slid upwardly anddownwardly in the usual manner, without any interference from the head11 of the rock shaft. By sliding the rock shaft 9 upwardly, the interlocking engagement between the head 11 and the pin 15 may be broken,whereupon the spring 16 will exert its torsional efiort to rotate therock shaft 9, and to actuate the head 11 into such a position that itwill exercise its locking function upon the members 4: and 5.

Having thus described the invention, what is claimed is 1. In a deviceof the class described, a window sash; a rock shaft slidably androtatably mounted upon the sash longitudinally of the same and providedwith a laterally projecting head, the rock shaft being rotatable in onedirection to cause the head to lock the sash in position; elements uponthe rock shaft head and the sash adapted to interlock when the rockshaft is rotated in an opposite direction and slid, to hold the rockshaft against rotation into its locking position; and a springconstituting at once,

a means for rotating the shaft into its locking position, and a meansfor securing the sliding movement of the shaft, to hold the interlockingelements in engagement.

2. The combination with a window frame and upper and lower sashes, of arock shaft slidably and rotatably mounted upon the lower sashlongitudinally of the same and provided with a laterally projectinghead; members upon the upper sash and the frame adapted to be ointly andseverally engaged by the head when the rock-shaft is rotated in onedirection; elements upon the head and the lower sash adapted tointerlock when the rock shaft is rotated in an opposite direction andslid, to hold the head out of engagement with said members; and a springconstituting at once, a means for rotating the shaft to engage the saidmembers, and a means for securing the sliding movement of the shaft, tohold the interlocking elements in engagement.

3. The combination with a window frame and a slidably mounted sash, of arock shaft slidably and rotatably mounted upon said sash longitudinallyof the same and having a head to overhang the upper edge of said sash; afixed stop upon the frame arranged to be engaged by the head when theshaft is rotated in one direction; a projection upon the upper portionof the sash with which the head is adapted to interlock when the rockshaft is rotated in an opposite direction and slid, to hold the head outof engagement with the stop; and a spring coiled about the rock shaftand connected at one end with the rock shaft and at the other endconnected with the lower sash, the spring acting torsionally to hold thehead in engagement with the stop, and expansively to hold the head inengagement with the projection.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

I/VILLIAM COLE.

Witnesses:

VIOLA CHICK, J. R. Corn.

